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Identifying Igneous Rocks
Igneous rocks are one of the three main classifications of rocks, and they are formed both above and below ground. Learn about the intrusive and coarse-grained nature of igneous rocks with help from a lab manager and research scientist in this free video... More »
Difficulty: Moderate
Source: www.ehow.com

Igneous rock - Wikipedia

en.wikipedia.org/wiki/Igneous_rock

Igneous rock or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling  ...

Igneous Rocks | Pictures of Intrusive and Extrusive Rock Types

geology.com/rocks/igneous-rocks.shtml

Photographs and descriptions of intrusive and extrusive igneous rocks with links to detailed articles by Geology.com.

Igneous Rock Facts for Kids - Information & Examples

www.sciencekids.co.nz/sciencefacts/earth/igneousrocks.html

Enjoy our igneous rock facts for kids. Find interesting information and a range of examples that help explain what igneous rocks are and what makes them ...

Igneous rocks facts, information, pictures | Encyclopedia.com articles ...

www.encyclopedia.com/earth-and-environment/geology-and-oceanography/geology-and-oceanography/igneous-rocks

Get information, facts, and pictures about Igneous rocks at Encyclopedia.com. Make research projects and school reports about Igneous rocks easy with credible ...

Igneous Rocks-A - Geology For Kids - By KidsGeo.com

www.kidsgeo.com/geology-for-kids/0026-igneous-rocks.php

Igneous rocks that form deep within the Earth's crust where temperatures are very high might take thousands of years to cool down. This causes the crystals to ...

Igneous rocks - OneGeology

www.onegeology.org/extra/kids/igneous.html

Igneous rocks are formed by solidification of cooled magma (molten rock) either below (plutonic) or above (volcanic) the surface of the earth. The magma ...

Intrusive Igneous Rocks | Mineralogy4Kids

mineralogy4kids.org/rock-cycle/intrusive-igneous-rocks

Intrusive, or plutonic, igneous rocks form when magma cools slowly below the Earth's surface. Most intrusive rocks have large, well-formed crystals. Examples ...

Igneous Rocks Classified by Composition

www.pitt.edu/~cejones/GeoImages/2IgneousRocks/IgneousCompositions.html

Igneous rocks are classified according to their mineral content: ... Intermediate rocks are roughly even mixtures of felsic minerals (mainly plagioclase) and mafic  ...

Igneous Rocks | Mineralogy4Kids

mineralogy4kids.org/rock-cycle/igneous-rocks

Igneous Rocks. There are places on Earth that are so hot that rocks melt to form magma. Because magma is liquid and usually less dense than surrounding ...